Typical infrared transmission spectra of synthetic melanin prepared in water as well as in DMSO.
Tapping mode AFM image of the (a) postdeposition hydrated melanin and (b) melanin samples prepared in the absence of water. scale: .
(a) Topographic AFM image of a round depression of a synthetic melanin: range . (b) Topographic AFM image of an agglomerate (a), and (c) Topograhic AFM image of flat terraces far from the depressions. Z scale: .
Topographic AFM image of the agglomerate. scale: . (b) FEM image. range: . (c) Surface charge image reconstruction. scale: .
(a) Contact mode AFM image. : . (b) Simulataneous current image for a sample bias of . scale: .
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